Need help with #4

Exercise 2-13 (Algo) Changes in Selling Price, Sales Volume, Variable Cost per Unit, and Total Fixed Costs [LO2-1, LO2-4) Miller Company's contribution format income statement for the most recent month is shown below: Sales (40,000 units) Variable expenses Contribution margin Fixed expenses Net operating income Total $ 400,000 280,000 120,000 43,000 $ 77,000 Per Unit $10.00 7.00 $ 3.00 Required: (Consider each case independently): 1. What is the revised net operating income if unit sales increase by 15%? 2. What is the revised net operating income if the selling price decreases by $1.50 per unit and the number of units sold increases by 22%? 3. What is the revised net operating income if the selling price increases by $1.50 per unit, fixed expenses increase by $9,000, and the number of units sold decreases by 7%? 4. What is the revised net operating income if the selling price per unit increases by 20%, variable expenses increase by 40 cents per unit, and the number of units sold decreases by 12%? $ 1. Net operating income 2. Net operating income 3. Net operating income 4. Net operating income WI. 95,000 30,200 115,400